--- /dev/null
+/*
+ * Copyright 2016-2017 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Privacy Browser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser.dialogs;
+
+import android.annotation.SuppressLint;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v4.content.ContextCompat;
+// We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <= 22. `android.support.v7.app.AlertDialog` also uses more of the horizontal screen real estate versus `android.app.AlertDialog's` smaller width.
+import android.support.v7.app.AppCompatDialogFragment;
+import android.util.Base64;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.webkit.WebBackForwardList;
+import android.widget.AdapterView;
+import android.widget.ListView;
+
+import com.stoutner.privacybrowser.R;
+import com.stoutner.privacybrowser.adapters.HistoryArrayAdapter;
+import com.stoutner.privacybrowser.definitions.History;
+
+import java.io.ByteArrayOutputStream;
+import java.util.ArrayList;
+
+public class UrlHistoryDialog extends AppCompatDialogFragment{
+
+ // `historyArrayList` and `currentPageId` pass information from `onCreate()` to `onCreateDialog()`.
+ private ArrayList<History> historyArrayList = new ArrayList<>();
+ private int currentPageId;
+
+ public static UrlHistoryDialog loadBackForwardList(Context context, WebBackForwardList webBackForwardList) {
+ // Create `argumentsBundle`.
+ Bundle argumentsBundle = new Bundle();
+
+ // Store `currentPageIndex`.
+ int currentPageIndex = webBackForwardList.getCurrentIndex();
+
+ // Setup `urlArrayList` and `iconArrayList`.
+ ArrayList<String> urlArrayList = new ArrayList<>();
+ ArrayList<String> iconBase64StringArrayList = new ArrayList<>();
+
+ // Get the default favorite icon `Drawable`.
+ Drawable defaultFavoriteIconDrawable = ContextCompat.getDrawable(context, R.drawable.world);
+
+ // Convert `defaultFavoriteIconDrawable` to a `BitmapDrawable`.
+ BitmapDrawable defaultFavoriteIconBitmapDrawable = (BitmapDrawable) defaultFavoriteIconDrawable;
+
+ // Extract a `Bitmap` from `defaultFavoriteIconBitmapDrawable`.
+ Bitmap defaultFavoriteIcon = defaultFavoriteIconBitmapDrawable.getBitmap();
+
+ // Populate `urlArrayList` and `iconArrayList` from `webBackForwardList`.
+ for (int i=0; i < webBackForwardList.getSize(); i++) {
+ // Store the URL.
+ urlArrayList.add(webBackForwardList.getItemAtIndex(i).getUrl());
+
+ // Create a variable to store the icon `Bitmap`.
+ Bitmap iconBitmap;
+
+ // Store the icon `Bitmap`.
+ if (webBackForwardList.getItemAtIndex(i).getFavicon() == null) {
+ // If `webBackForwardList` does not have a favorite icon, use Privacy Browser's default world icon.
+ iconBitmap = defaultFavoriteIcon;
+ } else { // Get the icon from `webBackForwardList`.
+ iconBitmap = webBackForwardList.getItemAtIndex(i).getFavicon();
+ }
+
+ // Create a `ByteArrayOutputStream`.
+ ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+
+ // Convert the favorite icon `Bitmap` to a `ByteArrayOutputStream`. `100` is the compression quality, which is ignored by `PNG`.
+ iconBitmap.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
+
+ // Convert the favorite icon `ByteArrayOutputStream` to a `byte[]`.
+ byte[] byteArray = byteArrayOutputStream.toByteArray();
+
+ // Encode the favorite icon `byte[]` as a Base64 `String`.
+ String iconBase64String = Base64.encodeToString(byteArray, Base64.DEFAULT);
+
+ // Store the favorite icon Base64 `String` in `iconBase64StringArrayList`.
+ iconBase64StringArrayList.add(iconBase64String);
+ }
+
+ // Store the variables in the `Bundle`.
+ argumentsBundle.putInt("Current_Page", currentPageIndex);
+ argumentsBundle.putStringArrayList("URL_History", urlArrayList);
+ argumentsBundle.putStringArrayList("Favorite_Icons", iconBase64StringArrayList);
+
+ // Add `argumentsBundle` to this instance of `UrlHistoryDialog`.
+ UrlHistoryDialog thisUrlHistoryDialog = new UrlHistoryDialog();
+ thisUrlHistoryDialog.setArguments(argumentsBundle);
+ return thisUrlHistoryDialog;
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ // Get the `ArrayLists` from the `Arguments`.
+ ArrayList<String> urlStringArrayList = getArguments().getStringArrayList("URL_History");
+ ArrayList<String> favoriteIconBase64StringArrayList = getArguments().getStringArrayList("Favorite_Icons");
+
+ // Remove the lint warning below that the `ArrayLists` might be `null`.
+ assert urlStringArrayList != null;
+ assert favoriteIconBase64StringArrayList != null;
+
+ // Populate `historyArrayList`. We go down from `urlStringArrayList.size()` so that the newest entries are at the top. `-1` is needed because `historyArrayList` is zero-based.
+ for (int i=urlStringArrayList.size() -1; i >= 0; i--) {
+ // Decode the favorite icon Base64 `String` to a `byte[]`.
+ byte[] favoriteIconByteArray = Base64.decode(favoriteIconBase64StringArrayList.get(i), Base64.DEFAULT);
+
+ // Convert the favorite icon `byte[]` to a `Bitmap`. `0` is the starting offset.
+ Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length);
+
+ // Store the favorite icon and the URL in `historyEntry`.
+ History historyEntry = new History(favoriteIconBitmap, urlStringArrayList.get(i));
+
+ // Add this history entry to `historyArrayList`.
+ historyArrayList.add(historyEntry);
+ }
+
+ // Get the original current page ID.
+ int originalCurrentPageId = getArguments().getInt("Current_Page");
+
+ // Subtract `originalCurrentPageId` from the array size because we reversed the order of the array so that the newest entries are at the top. `-1` is needed because the array is zero-based.
+ currentPageId = urlStringArrayList.size() - 1 - originalCurrentPageId;
+ }
+
+ // The public interface is used to send information back to the parent activity.
+ public interface UrlHistoryListener {
+ // Send back the number of steps to move forward or back.
+ void onUrlHistoryEntrySelected(int moveBackOrForwardSteps);
+
+ // Clear the history.
+ void onClearHistory();
+ }
+
+ // `urlHistoryListener` is used in `onAttach()` and `onCreateDialog()`.
+ private UrlHistoryListener urlHistoryListener;
+
+ @Override
+ public void onAttach(Context context) {
+ super.onAttach(context);
+
+ // Check to make sure tha the parent activity implements the listener.
+ try {
+ urlHistoryListener = (UrlHistoryListener) context;
+ } catch (ClassCastException exception) {
+ throw new ClassCastException(context.toString() + " must implement UrlHistoryListener.");
+ }
+ }
+
+ @Override
+ @NonNull
+ // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
+ @SuppressLint("InflateParams")
+ public Dialog onCreateDialog(Bundle savedInstanceState) {
+ // Get the activity's layout inflater.
+ LayoutInflater layoutInflater = getActivity().getLayoutInflater();
+
+ // Use `AlertDialog.Builder` to create the `AlertDialog`. `R.style.lightAlertDialog` formats the color of the button text.
+ AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
+
+ // Set the title.
+ dialogBuilder.setTitle(R.string.history);
+
+ // Set the view. The parent view is `null` because it will be assigned by `AlertDialog`.
+ dialogBuilder.setView(layoutInflater.inflate(R.layout.url_history_dialog, null));
+
+ // Set an `onClick()` listener on the negative button.
+ dialogBuilder.setNegativeButton(R.string.clear_history, new DialogInterface.OnClickListener() {
+ @Override
+ public void onClick(DialogInterface dialog, int which) {
+ // Clear the history.
+ urlHistoryListener.onClearHistory();
+ }
+ });
+
+ // Set an `onClick()` listener on the positive button.
+ dialogBuilder.setPositiveButton(R.string.close, new DialogInterface.OnClickListener() {
+ @Override
+ public void onClick(DialogInterface dialog, int which) {
+ // Do nothing if `Close` is clicked. The `Dialog` will automatically close.
+ }
+ });
+
+ // Create an `AlertDialog` from the `AlertDialog.Builder`.
+ final AlertDialog alertDialog = dialogBuilder.create();
+
+ // We need to show `alertDialog` before we can modify the contents.
+ alertDialog.show();
+
+ // Instantiate a `HistoryArrayAdapter`.
+ final HistoryArrayAdapter historyArrayAdapter = new HistoryArrayAdapter(getContext(), historyArrayList, currentPageId);
+
+ // Get a handle for `listView`.
+ ListView listView = (ListView) alertDialog.findViewById(R.id.history_listview);
+
+ // Remove the warning below that `listView` might be `null`.
+ assert listView != null;
+
+ // Set the adapter on `listView`.
+ listView.setAdapter(historyArrayAdapter);
+
+ // Listen for clicks on entries in `listView`.
+ listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+ @Override
+ public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+ // Convert the `long` `id` to an `int`.
+ int itemId = (int) id;
+
+ // Only enable the click if it is not on the `currentPageId`.
+ if (itemId != currentPageId) {
+ // Get the history entry for this `itemId`.
+ History historyEntry = historyArrayAdapter.getItem(itemId);
+
+ // Remove the lint warning below that `historyEntry` might be `null`.
+ assert historyEntry != null;
+
+ // Send the history entry URL to be loaded in `mainWebView`.
+ urlHistoryListener.onUrlHistoryEntrySelected(currentPageId - itemId);
+
+ // Dismiss the `Dialog`.
+ alertDialog.dismiss();
+ }
+ }
+ });
+
+ // `onCreateDialog` requires the return of an `AlertDialog`.
+ return alertDialog;
+ }
+}
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projects / PrivacyBrowserAndroid.git / blobdiff